Relative determination approach to the metabolites of protoberberine alkaloids in rat urine by liquid chromatography tandem mass spectrometry for the comparative studies on rhizome coptidis and zuojinwan preparation
IJPR-Iranian Journal of Pharmaceutical Research. 2012; 11 (4): 1265-1273
in English
| IMEMR
| ID: emr-155481
ABSTRACT
The lack of authentic standards has limited the quantitative analysis of herbal drugs in biological samples. The present work demonstrated a practicable strategy for the assay of herbs and their metabolites independent of authentic standards. A liquid chromatography- electrospray ionization-mass spectrometry [LC-ESI-MS] method for the qualitative and quantitative determination of the metabolites after oral administration of Rhizome coptidis and Zuojinwan preparation in rat urine has been developed. Urine samples, extracted with a protein precipitation procedure were separated on a C[18] column using a mixture of water [containing 0.1% formic acid] and acetonitrile [3070, v/v] as mobile phase. The detection was performed via MS with electrospray ionization interface in positive selected reaction monitoring [SRM] mode. One urine sample after administration was selected as standard. The method validation was carried out according to a conventional method which was calibrated by authentic standards. The fully validated method was applied to the pharmacokinetic study of 2,9-demethyljateorhizine-3-sulfate, 13-methoxyjateorhizine-3- glucoronide and 6-methyljateorhizine-5-glucoronide in rat urine. The results could provide evidence to explain the combination of Rhizome coptidis and Evodiae fructus in terms of elimination
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Rats
/
Berberine Alkaloids
/
Chromatography, Gas
/
Urinalysis
/
Rats, Sprague-Dawley
/
Rhizome
/
Tandem Mass Spectrometry
Limits:
Animals
Language:
English
Journal:
Iran. J. Pharm. Res.
Year:
2012
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